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Hello! Just My Luck has four files that look like the movie:

Title information
Name: Just My Luck
Comment: SEG_MainFeature_2
Source file name: 00467.mpls
Duration: 1:41:40
Chapters count: 28
Size: 32.0 GB
Segment count: 1
Segment map: 467
File name: Just_My_Luck_t04.mkv

Title information
Name: Just My Luck
Comment: FPL_MainFeature_INT_JPN
Source file name: 00802.mpls
Duration: 1:42:18
Chapters count: 28
Size: 32.1 GB
Segment count: 2
Segment map: 468,467
File name: Just_My_Luck_t19.mkv

Title information
Name: Just My Luck
Comment: FPL_MainFeature_DOM
Source file name: 00800.mpls
Duration: 1:42:38
Chapters count: 28
Size: 32.2 GB
Segment count: 2
Segment map: 469,467
File name: Just_My_Luck_t23.mkv

Title information
Name: Just My Luck
Comment: FPL_MainFeature_INT
Source file name: 00801.mpls
Duration: 1:42:18
Chapters count: 28
Size: 32.1 GB
Segment count: 2
Segment map: 468,467
File name: Just_My_Luck_t24.mkv

I don't know which one is the one that I should extract if I'm just looking for the North America/United States version. FPL_Main_Feature_INT_JPN has the fewest languages and subtitle options, so my bets are against that one.

There's three files that look like they're just segments: SEG_MainFeature_INT, SEG_MainFeature_2, and SEG_MainFeature_DOM. So I guess those are combined into the FPL_ files? Then it's just a matter of figuring out if it's the _DOM version I want (maybe it means domestic?) or _INT (international?).

There's also this, which leads me to believe I may have not purchased a North American copy, but everything on the case is in English, so I don't know anymore.

Title information
Name: Just My Luck
Comment: Japanese Piracy
Source file name: 00189.mpls
Duration: 0:00:15
Chapters count: 1
Size: 38.5 MB
Segment count: 1
Segment map: 127
File name: Just_My_Luck_t02.mkv

Most likely it is playlist 00800.mpls for the English (North American) Version.